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Table 17Proposed Groundwater Extraction Well Construction DetailsWell Installation and Interim Remedial Action ReportCalifornia Department of Corrections and RehabilitationStockton, California Proposed Monitoring or Extraction Well(s)aBorehole Depthb (ft bgs)Minimum Borehole Diameter (inches)Anticipated Depth to Waterc (ft btoc)Well Depthd (ft bgs)Casing Diameter and Typed (inches)Screen Lengthsd (ft)Screen Slot Size(inches)Screened Interval Backfill Material and PlacementMonitoring Well Annular SealGrout Annular Seal Surface CompletiondEW-XX (intermediate)up to 130 10 60 Up to 130 ft bgsSix-inch Sch. 80 PVCOne screen targeting intermediate water- bearing zone with final length based on pilot hole lithological findings (likely 20-30 ft in length)Six-inch stainless steel with slot determined by sieve data (anticipated 0.02 slot) Silica sand with size determined by well design, filled to >5 ft over top of screen (anticipated as #2/16 for 0.02 slot)5 ft 3/8 hydrated bentonite chips / pelletsNeat Portland cementSurface casing left as required to hook up to the remedial system (likely initially PVC pipe stickup to 2 ft with well cap)Notes:a Actual well nomenclature to be determined at a later date based on monitoring program. b The anticipated total depth is based borehole lithology results from AMW-50M, which indicated sand to at least 120 ft bgs.c The anticipated depth to groundwater is based on groundwater monitoring results from AMW-50M.d Exact well completion depth, screen length, and design to be determined based on lithology at the well location. Acronyms and Abbreviations: > = greater thanbgs = below ground surfaceft = feetPVC = polyvinyl chlorideSch. = schedulePage 1 of 1